SecureStamp Action Proof — Cross-Cloud Public Beta (Unverified) for ChatGPT

online.securestamp/action-proof

UNVERIFIED: cross-cloud beta; sandbox by default; production opt-in via customer Guardian.

client:ChatGPT transport:streamable-http runtime:npm

Install SecureStamp Action Proof — Cross-Cloud Public Beta (Unverified) in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.securestamp.online/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs